Global Patent Index - EP 1735982 A1

EP 1735982 A1 20061227 - GENERATING HIGHER ORDER MODULATION USING QPSK MODULATIONS

Title (en)

GENERATING HIGHER ORDER MODULATION USING QPSK MODULATIONS

Title (de)

ERZEUGUNG EINER MODULATION HÖHERER ORDNUNG UNTER VERWENDUNG VON QPSK-MODULATIONEN

Title (fr)

MODULATION D'ORDRE SUPERIEUR PAR MODULATIONS QPSK

Publication

EP 1735982 A1 20061227 (EN)

Application

EP 05718201 A 20050314

Priority

  • IB 2005000636 W 20050314
  • EP 04008868 A 20040414
  • EP 05718201 A 20050314

Abstract (en)

[origin: WO2005101781A1] A method and system generates a higher order modulation, in which a complex sequence of binary digits corresponding to symbols of a higher order modulation is received. The symbols correspond to constellation points of the higher order modulation. First mapping means map the symbols of the higher order modulation to first constellation points of a first QPSK modulation and output an output signal of the first QPSK modulation corresponding to the first constellation points. Similarly, second mapping means map the symbols of the higher order modulation to second constellation points of a second QPSK modulation and output an output signal of the second QPSK modulation corresponding to the second constellation points. Adding means add the output signals of the first and second QPSK modulations, thereby generating the constellation points of the higher order modulation.

IPC 8 full level

H04L 27/36 (2006.01); H04B 1/707 (2011.01)

CPC (source: EP)

H04L 27/362 (2013.01); H04B 1/707 (2013.01)

Citation (search report)

See references of WO 2005101781A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2005101781 A1 20051027; AT 466439 T 20100515; CN 1961556 A 20070509; CN 1961556 B 20101103; DE 602005020918 D1 20100610; EP 1735982 A1 20061227; EP 1735982 B1 20100428; PL 1735982 T3 20101029; US 2005232374 A1 20051020; US 7680213 B2 20100316

DOCDB simple family (application)

IB 2005000636 W 20050314; AT 05718201 T 20050314; CN 200580017606 A 20050314; DE 602005020918 T 20050314; EP 05718201 A 20050314; PL 05718201 T 20050314; US 92034904 A 20040818